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BÀI TẬP TRẮC NGHIỆM HÓA ĐẠI CƯƠNG VÀ VÔ CƠ CẨM NANG DÙNG LUYỆN THI THPTQG CHẤT LƯỢNG CAO (COLOR BOOK)

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trong<br />

(A) 4,83 gam.<br />

(C) 7,33 gam.<br />

2<br />

2SO 4<br />

(B) 5,83 gam.<br />

(D) 7,23 gam.<br />

nH 2<br />

0,05 (mol).<br />

2SO 4 MgSO 4 + H 2<br />

Zn + H 2 SO 4 ZnSO 4 + H 2<br />

n n 0,05 (mol).<br />

H2SO<br />

4 H2<br />

= m +<br />

m SO4<br />

Ta có<br />

n n 0,05 (mol)<br />

SO4 H2SO4<br />

m 96.0,05 4,8 (gam).<br />

SO 4<br />

.<br />

1<br />

H 2 SO 4 2<br />

(A) Al. (B) Ca. (C) Fe. (D) Zn.<br />

2<br />

H 2 SO 4<br />

3<br />

(A) 52,94 %. (B) 47,06 %.<br />

(C) 79,41 %. (D) 35,67 %.<br />

2SO 4 2<br />

(A) 35,14 %. (B) 30,27 %.<br />

(C) 45,76 %. (D) 34,58 %.<br />

2<br />

193

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